North American Hobie Class Association
- Source of information about Hobie Cat sailing for pleasure and class racing in North America. Includes information about learn to sail programs, youth programs, national event support, race support programs, fleets, and divisions.
- http://www.hcana.hobieclass.com/

British Hobie Cat Class Association
- Contains news, classes, training and services, forum, calendar of events and results, photos, and weather reports.
- http://www.hobiecat.org.uk/

Hobie Cat Division 7 Website
- Division events, news, regatta results, fleet listings, division officers, and regatta schedules.
- http://www.hobiecatdivision7.org

Victorian Mosquito Catamaran Association
- Contains information for Mosquito catamaran sailors, including its history, racing results, photos, and contact information.
- http://home.vicnet.net.au/~mosquito/

Polynesian Catamaran Association
- The PCA is the Wharram Catamaran Admirers Club, with over 600 members world-wide in over 40 countries. Includes news, products and services, and contact information.
- http://www.pca-seapeople.org

Paper Tiger Catamaran
- Offers a brief introduction, links to clubs, FAQs and photographs.
- http://www.papertigercatamaran.org

Hurricane 5.9 Class Association
- Information about upcoming events, regatta results, boat specification and "hints and tips", and class contacts, as well as the "Wildthing", the association newsletter.
- http://www.hurricane59.com

Multihull Offshore Cruising and Racing Association
- All about MOCRA, the Warsash Spring series, cruising rallies, results and news.
- http://homepages.enterprise.net/mocra/

International Hobie Class Association
- Includes the history of Hobies, events and results, rule changes, regatta material, past champions, and contact names.
- http://www.hobieclass.com/

Taipan Catamaran Association
- Includes Taipan 4.9 and 5.7, lightweight, high-performance catamarans. Featured articles, race notices, classified ads, calendar of events, photo gallery and regatta results.
- http://www.taipan.asn.au/

Victorian Cobra Catamaran Association
- Learn about its history, rules and restrictions; newsletters, photo gallery, and contact information included.
- http://www.netspace.net.au/~stanblaz/cobracat.htm

UKIDA Online
- Information and news for Dart18 catamaran sailors worldwide.
- http://www.dart18.com/

British Columbia Multihull Society
- Includes construction information, cruising, boat list, schedule of events, library, membership and contact information.
- http://www.bcms.bc.ca/index.html